Cooper-instruments-systems DCI 120 Bridge/Strain Gauge Data Loggers Bedienungsanleitung PDF herunterladen (Seite 1)

CF 179 1 Rev A 2008.07.08

DCI 120

20Hz Bridge/Strain Recorder

DCI 120-10

10mV, 20 Hz, Bridge Recorder

DCI 120-25

25mV, 20 Hz, Bridge Recorder

DCI 120-100

100mV, 20 Hz, Bridge Recorder

DCI 120-1000

1000mV, 20 Hz, Bridge Recorder

Configuring the Data Logger

Voltage Divider Configuration

The Voltage Divider configuration is a simple and frequently used setup to measure bridge strain.

1. Jumper between POWER and REF+

2. Place a 12kΩ resistor between REF+ and REF-

3. Jumper between REF- and IN+

4. Place the strain gage between IN+ and IN-

5. Jumper between IN- and GROUND

Conversions

To convert the Voltage values into Ohms, use the following formula:

Example: The software reports a voltage of 20mV in the circuit described above. The strain gage resistance is

therefore:

The resistor Ro between REF+ and REF- and the strain gage value form the mV reference (mVref). This may

be expressed as:

The Bridge120-25 has a resolution of about 2μV. If the resistance of the strain gage changes by +.1, the device

would measure a change of approximately +

20μV. Conversely, this voltage resolution translates in Ohms to

approximately:

Note: The maximum voltage must be kept within the specified input range. See data sheet for details.

Product Notes

LEDs

Once started, the LED will flash at the selected reading rate to indicate that the device is running.

1 2 3

Inhaltsverzeichnis

Seite 1 - CF 179 1 Rev A 2008.07.08

CF 179 1 Rev A 2008.07.08 DCI 120 20Hz Bridge/Strain Recorder DCI 120-10 10mV, 20 Hz, Bridge Recorder DCI 120-25 25mV, 20 Hz, Bridge Record

Seite 2 - Device Maintenance

CF 179 2 Rev A 2008.07.08 Installation Guide Installing the Interface cable - IFC200, IFC202 or IFC300; Refer to the “Quick Start Guide” included in

Seite 3 - WARRANTY REPAIR POLICY

CF 179 3 Rev A 2008.07.08 Recalibration DCI 120 standard calibration values: Logger Voltage 10mV 25mV 100mV 1000mV Strain (V) 0V and 9-10mV 0V

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Cooper-instruments-systems DCI 120 Bridge/Strain Gauge Data Loggers Bedienungsanleitung Seite 1

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Empfänger und Verstärker Cooper-instruments-systems DCI 120 Bridge/Strain Gauge Data Loggers herunter. Cooper Instruments & Systems DCI 120 Bridge/Strain Gauge Data Loggers User Manual Benutzerhandbuch

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Cooper-instruments-systems DCI 120 Bridge/Strain Gauge Data Loggers Bedienungsanleitung Seite 1

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Empfänger und Verstärker Cooper-instruments-systems DCI 120 Bridge/Strain Gauge Data Loggers herunter. Cooper Instruments & Systems DCI 120 Bridge/Strain Gauge Data Loggers User Manual Benutzerhandbuch

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